Shoe-last.



E. J. PRINDLE.

SHOE LAST.

APPLlcmoN msn MAY l0, |913.

Patented Nov. 12, 1918.

4 SHEETS-SHEET l- E. I. PRINDLE.

SHOE LAST.

APPLICATION FILED MAY l0, I9I3.

Patented Nov. 12, 1918.

4 SHEETS-SHEET 2.

NUII

E. I. PRINDLE.

SHOE LAST.

APPLICATION msn MAYIo. ma.

1,284,450. Patented Nov. 12, 1918.

4 SHEETS-SHEET 3.

E. l. PRINDLE.

SHOE LAST.

APPLICATION FILED MAY l0. \9l3.

Patented Nov. '12,v 191s.

4 SHEETS-SHEET 4- EDWIN J. PRINDLE, 0F EAST ORANGE, NEW JERSEY,

MENTS, TO UNITED SHOE MACHINERY C A CORPORATION or NEW JERSEY.

SHOE-LAST.

Specication of Letters Patent.

Patented Nov. 12, 1918.

Application iled May 10, 1913. Serial No. 766,811.

To all whom t mag/concern.'

Be it known that I, EDWIN J'. PRINDLE, of East Orange, in the county of Essex, and in the State of New Jersey, have invented a certain new and useful Improvement in Shoe-Lasts, and do hereby declare that the following is a full, clear, and exact description thereof.

The object of my invention has been to provide a shoe last which shall have, among others, the following advantages: That it shall be capable of withstanding the blows or pressure of a heeling machine in driving the heel on the last; that it shall be practically indestructible under the operation of the heeling machine; that its heelpart shall be capable of beingmade entirely of metal; and that, while made of metal, its Weight shall be controllable without change of the principle on which it is constructed.

A feature of the invention consists in a last heel kformed substantially entirely of metal and having a cellular structure. The stress of the heeling machine is thus taken by a material which is adapted to withstand it, and the damage which is continually occurring in the use of wooden heeled lasts is avoided.

Another feature of the invention consists in a skeleton or shell bracing structure extending upwardly from the heel plate and adapted to transmit stresses arising in the heel plate or the jack in the heeling operation.

These and other features of the invention will be understood from the following description of a preferred embodiment thereof, selected for purposes of illustration.

In the accompanying drawings Figures 1, 2 and 3 are, respectively, a plan view and longitudinal sectional views of a shoe last embodying my invention;

Figs. 4 and 5 are, respectively, side and bottom elevations of a shoe last embodying my invention;

. Fig. 6 is a rear view the last;

Fig. 7 is a sectional view taken on the line 7-7 of Fig. 2;

Fig. 8 is a bottom view of the heel part of Fig. 1, the heel plate being removed;

Fig. 9 is a perspective view, slightly from below, of the thimble-piece;

of the toe part of heads of the lower studs 3 I Fig. 1Q is a perspective IView o f the inter1or racing;

Flg. 11 is a transevrse sectional view of Fig. 8;

Figs. 12, 13 and 14 are, respectively, front s1de and back views ofthe forward plate of my hinge connection' Figs. 15, 16 and 177 are similar views of the rear plate of my hinge plate connection;

Figs. 18 and 19 are front and side elevations of a locking piece; and

Figs. 20 and 21 are similar views of the spring.

My invention is preferably embodied in a last having a toe and heel part readily detachable from each other so that a standard heel part can be used with several or many styles of toe parts, thus reducing the cost of lasts in a factory, since not all the styles of toe parts are in use at the same time. For this style of last it is obviously desirable to have the heel part indestructible or as nearly indestructible as possible, because the greatest strains come upon the heel parts. In the accompanying drawings, the toc part 1 is shown as connected with the heel part 2 by the following connection: Headed studs 3 are secured in the rear face of the toe part as by rivets 4, there preferably being one upper and two lower studs. These studs are adapted to be engaged by a forward plate 5 of a hinge connection, which plate is shown in Figs. l2 to 14. The said plate 5 has two lower notches 6 which, like keyhole slots, are adapted to t over and behind the and it is provided with an upper notch 2? that is preferably formed in the turned-over upper end 8 of the plate, such end at its sides having ears 8, to which are riveted ears 9 formed on the body of the plate. The notch 7 thus stands in a plane forward of the notches 6 so that the said notch can be open at its bottom, instead of being'a true keyhole slot as it would have to be if it were forme in the body of the plate 5. This permits engagement of the plate 5 with the three studs by a simple downward movement. The plate 5, at its lower end, has two ears 10 bent rearward therefrom, which are connected by rivets or a pintle 11 with ears 12 on the rear hinge plate 13. At its upper ASSIGNOR, BY MESNE ASSIGN- OBPORATION, OF PATERSON, NEW JERSEY,

last is extended-by opening end, the rear hin le platel has ears 14: in which is pivoted t e U-shape locking piece 15 shown in Figs. 18 and 19, as by a rivet or pintle 16. The locking piece is engaged under a bail 16 secured in a vertical plane in the forward plate 5 as by having its ends passed through said plate and headed over. The lower end of the plate 13 is bent forward as at 13, so that when the hinge is open and the last extended, as in Fig. 2, said edge 13 will project under the heads of the lower studs 3, andtlius lock the hinge connection from riding up and becoming detached from said studs. A spring 17, as shown in Figs. 20 and 21, has its front and rear ends 18 and 19, respectively, connected by a loop 2O which is only partially closed, so that said loop can be sprung over the pintle 16 and removably hold the spring in place, thus providing for its ready renewal in case of breakage. r"he forward end 18 of the spring is preferably forked to straddle the bail in the collapsed condition of the hinge. 'Ihe rear end of the spring rests against the plate 13, and the forward end under the legs of the locking piece 15 so that the spring normally tends to throw the locking piece up.

When the locking piece is thrown down, as shown in Fig. 3, and the hinge collapsed, the forward plate can be engaged with or disengaged from the studs on the fore part by a simple vertical movement, because the portion 13 of the rear hinge plate is re, moved from beneath the studs. When the the hinge, the spring throws the locking piece to the upper end of the bail, and in this position the locking piece prevents either collapse or'a further extension of the last. The portion 13 of the rear hinge plate also stands beneath the stud heads and thus locks the hinge on the studs.

The heel part proper (which could be used with any form of connection with the toe part) consists preferably entirely of metal, or is of such a construction that it can be made entirely of metal. It is composed preferably of the following parts: There is a jack pin thimble and anvil part which consist of a plate 21 and a thimble 22, said parts being preferably formed of one piece of metal, as by forging. The plate 21 rests upon the machine operating upon the last, such as the heeling machine. heel nlate 23 is supported on the anvil plate 21 by sheet metal stood on edge and preferably having its vertical elements straight. In the present embodiment I have provided a conical shell 24 whose edges adyacent to the heel plate conform to the outline of the heel plate and stand beneath and support the outer edges of the heel plate. The lower edges of the said shell rest upon the anvil plate 21 and the sides of the said shell are composed of straight lines. The front wall of the said shell preferably consists of a lower straight part 24 formed at an inclination to fit the rear face of the toe part, and an upper inclined part 25 which, in the normal condition of the last, aords a wedge shape place between the toe and heel parts to permit collapsing of the last. The shell may either be formed of sheet metal bent around horizontally and meeting at the front, or it may be formed by shaping or cupping up metal, so that there is no seam. 0n the edges of the shell adjacent to the heel plate may be formed forward and rearward ears 26 and 27, respectively, to which the heel plate may be secured as by riveting. Obviously, there are many other ways in which the heel plate may be fastened to the shell. The shell will amply support the edges of the heel plate, but in order to support the heel plate within the edges, I pref'- erably provide a construction which con'- sists preferably of sheet metal so formed that all its lines extending from the heel plate to the anvil plate shall be straight lines, thus disposing the metal to the best advantage to stand strain. In the present instance I have surrounded the thimble by V-shape braces, the arms 29 of which preferably extend, out to, and rest against the shell, and the bases 30 of which rest against the thimble. The adjacent arms of the braces are preferably secured together as by riveting or welding. In the present instance, I have shown eight pairs of arms. The number could obviously be larger or smaller. The ears 26 and 2.7 are preferably formed so as not to overlie the arms. The upper edges of the arms, (the last being assumed to be inverted), preferably conform to the curvature of the heel plate. The curvature of the heel plate is preferably symmetrical transversely to the airis o f the thimble. The foot-shape contour is given to the heel part by a plate 31 which fits around the shell and heel plate and which is secured to the latter at least at its upper and lower edges as b welding or soldering. The said plate 31 is preferably made of non-corrodible material, such as aluminum or fiber. This non-corrodible member serves two purposes; it prevents the staining of the shoe lining by rust and it protects the metal parts in the interior of the last heel from corrosion since a wooden or corroded metal shell would be liable to retain moisture and thus tend to corrode neighboring metal.

In assembling the heel, the internal brace structure or spider is first placed within the shell and then the heel plate is riveted to the ears on the shell. The combined jack pin thimble and anvil part is then put in place and the rivet 32 is then put through the shell, bracing and thimble and secures these parts together. Afterward the casting or ifo` sheet metal part 31, to 've the foot-sha e contour, is welded or so dered to the she l.

I do not' claim herein the novel connection between the heel part and toe part which I have disclosed, but have claimed it in a divisional application Serial No. 165, filed January 2, 1915.

I claim:

l. A metal last heel comprising a pinreceiving portion or thimble, and a cellular structure adapted to support the tread portion of the heel laterally and longitudinally.

2. A metal last heel comprising a pin receiving portion or thimble, a heel plate, and a multi-cellular structure arranged and constructed to support the heel plate and thimble, the inner walls of said structure being substantially vertical.

3. A last heel made substantially entirely of metal, and having a multi-cellular structure.

4. A last heel made substantially of metal and having a plurality of adjacent cells therein, the walls between the cells being substantially vertical.

5. A shoe last heel comprising a metal heel plate, a metal conical plate, a jack pin thimble, and a series of connected braces extending between said plates.

6. A shoe last heel comprising a metal heel plate, a metal conicallplate, a jack pin thimble, and a series of braces extending between said plates, said braces radiating from said jack pin thimble.

7. A shoe last heel comprising a metal heel plate, a metal conical plate, a jack pin thimble, and a series of braces extending between said plates, said braces being in substantially vertical planes.

8. A shoe last heel comprising a metal heel plate, a thimble, and a series of braces adapted to transmit to the heel plate the stress coming from the jack, and extending to and around the heel plate.

9. A shoe last heel comprising a metal heel plate, a thimble, and a series of braces adapted to transmit to the heel plate independently of the thimble the stress coming from the jack, said braces extending to the heel plate, and radiating from the thimble.

10. A shoe last heel comprising a metal heel plate, and a metal structure adapted to transmit to said heel plate the stress coming from the jack, having a jack pin hole, and cells having common walls that are substantially vertical.

11. A shoe last heel comprising a metal heel plate. ajack pin thimble, and a spider adapted independently of the thimble to transmit to said heel plate the stress coming from the jack.

12. A shoe last heel comprising a metal heel plate, a jack pin thimble,-and a spider adapted to transmit to said heel plate the stress coming from the jack, said heel also 'inclosing said metal having an outer wall adapted to support the".

edge of the heel plate.

13. A shoe last heel comprising a metal heel plate, a thimble arranged tohold the last in position on a jack pin, and a completely closed metal shell supporting the outer edges of the plate.

14. A shoe last heel comprising a metal heel plate and a metal shell supporting the outer edges thereof, the' walls of said shell being so shaped that vertical planes intersect it in substantially straight lines.

15. A shoe last heel comprising a metal heel plate, a metal shell supporting the edges of said heel plate and intersecting vertical planes in straight lines, and a second shell shell and having a curved conformation.

16. A shoe last heel comprising a metal heel plate, a metal shell supporting the edges of said heel plate and intersecting vertical planes in substantially straight lines, and a second shell inclosing said metal shell and" having a curved conformation, said second shell being composed of'non-corrodible metal.

17. A shoe last heel comprising a metal heel plate and a metal shell supporting the edges of said plate, and sheet metal bracing supporting the interior of said plate, said bracing consisting of plates whose intersections with vertical straight.

18. A shoe last heel comprising a metal heel plate having a last pin hole and metallic brace plates radiating from the last pin hole constructed and arranged to transmit stress from the heel plate to the upper face of the heel.

19. A shoe last heel, comprising a metal heel plate, a jack pin thimble, and a series of substantially V-shaped braces extending between the cone face and tread face of the heel, having their bases at the jack pin thimble and their arms radiating therefrom, said braces having edges formed to rest upon a plate adapted to be supported from a jack.

20. A shoe last heel comprising a metal heel plate and a series of substantially V- shaped braces having their bases at the jack pin hole and their arms radiating therefrom, said braces being formed of sheet metal, and said arms being fastened together.

21. A shoe last Wheel comprising a metal heel plate, a jack pin thimble and bracing comprising substantially V shaped parts having their bases resting against and supporting said jack pin thimble.

22. A shoe last heel comprising the combination of a metal heel plate, a jack pin thimble and V-shaped braces surrounding said thimble, said braces being composed of sheet metal and having their bases against said thimble and their arms radiating outward from it, said arms being connected together.

planes are substantially 'of said plate and a bracing within said shell for supporting said plate, said bracing consisting of V-shaped sheet 'metal braces havy ing their bases toward the vertical axis of the heel and having their arms resting against said shell.

24. A shoe last heel comprising a'metal heel plate, a metal shell supportingthe edges of said plate and a bracing within ysaid shell for supporting said plate, said bracing consisting of V-shaped sheet metal braces having their bases toward the vertical axis of the heel and having their arms resting against said shell, said arms being fastened together.

25. `A shoe last heel comprising a metal heel plate, metal parts supporting said heel plate and consisting of vertical planes, and a shell secured to said metal parts to give to the last heel a foot-shape contour.

26. A shoe last heel comprising a metal heel plate, metal parts supporting said heel plate and 'consisting of vertical planes, and

a shell secured to said metal parts to give to the last heel a foot-shape contour, said last mentioned shell being composed of noncorrodible material.

27. A shoe last heel comprising a metal heel plate, a metal anvil plate and thimble, and a shell resting on said anvil plate and supporting the edges of said heel plate.

28. A shoe last heel comprising a metal heel plate, a metal anvil plate and thimble, a shell resting on said anvil plate and supporting the edges of said heel plate, said shell intersecting planes passing through the aXis of said thimble in substantially straight lines.

29. A shoe last heel comprising a metal heel plate, ametal anvil plate and thimble, a shell resting on said anvil plate and supporting the edges of said heel plate, and a bracing between said thimble and said shell, said bracing being composed of substantially vertical planes.

30. A shoe last heel comprising a metal heel plate, a metal anvil plate and thimble, a shell supporting the edges of said heel plate from said anvil plate, and sheet metal bracing supporting the body of said heel plate, said bracing comprising substantiallyv V-shaped sheet metal parts having their bases against the thimble and their arms against said shell, said shell and said bracing intersecting planes passing through the axis of said thimble in substantially straight lines.

31. In a shoe last heel, a heel plate and a cellular structure adapted to transmit to the heel plate over substantially its whole surface the stress coming from a jack, said structure comprising a jack pin hole.

32. A metal last heel having a thimble and a plurality of adjoining cells therein sepa- 'rated only by their own metallic walls.

33. A metal last heel comprising a pin receiving portion or thimble, a heel plate, and an internally reinforced shell structure for supporting the heel plate.

34. In a shoe last heel, a heel plate and an integral skeleton structure constructed and arranged to transmit to the heel plate stress coming from a jack, said structure comprising a jack pin hole.

35. A metal last heel comprising a pin receiving portion, a heel plate, a shell member adapted toy support the tread portion of the heel, and a skeleton'reinforcement for said shell member.

36. A shoe last heelvcomprising a metal heel plate, a conical plate having roughly the Contour of the counter portion of a last heel, and a series of braces extending between said plates.

37. A last provided with a heel section having a tubular core serving as a bearing,

said heel section also being provided with a strengthening web running longitudinally of the heel section and with a strengthening web running transversely of the heel section, said webs terminating at said tubular core, and said webs and tubular corehaving rigid metallic connection to each other and to the heel section.

38. A last including a hollow metallic heel section having webs lying in intersecting planes and having a tubular member arranged at the pointiof intersection of the planes and rigidly connected with the webs.

39. A last including a metallic heel section having a tubular core and having a plurality of webs radiating from the core and connected rigidly therewith and with the heel section.

40. A last including a heel section having a tubular core and having a plurality of strengthening webs connected rigidly with the heel section and bracing the core.

41. A last including a hollow heel having a core comprising a thimble hole extending between opposite walls of the heel and connected therewith by a metallic connection, and means within the heel for bracing the core.

In testimony that I claim the foregoing I have hereunto set my hand.

' EDWIN J. PRINDLE.

Witnesses:

J. FRENDENvoLL, L. BRODERICK.

ici:1 

